Window-sash securing means



Patented Nov. s, 2927.

'canvrn 'rnoivrrsorr, or vancoovnre, BBIQISE; COLUMBIA, CANADA;

WIND CV, 31531-3.

Application filed April 5, 1925.1

This invention relates to a means for automatically securing a slidable window sash 'in the closed position and may also be used for sustaining'the sash atany desired position of elevation, in which case the device requires to be manually operated, while in the closed position the aceionis' fitiiJOIllEItlC;

The device also prevents the sash rattling 'inits frame.

These results are attained by a small eccentric-which is mounted on the stile ofthe sash and is held by a'spring in light frictional engagenient with the window frame. The engagei'nent of the eccentric with the frame being above the pivot on which the eccentric is mounted any attempt to move the sash upward will tend to draw the larger dimension 'of the eccentric between the pin on which it is mounted and the facinglof the indow frame, whereby the sash is automatically secured against being opened from without. r i a From within the room the eccentric can'be manually rotated to withdrawthe upper part of it from its frictional engagement 'with the facing whenthewindow can be lifted to any desired height and if the eccentrio is then rotated to bring the major part of it into engagement with the facing 0f the window frame below the pivot on which the eccentric is mounted, the frictional engagement of the eccentric will tend to draw the larger dimension between the pivot pin and frame and sustain the sash at the desired elevation in its frame.

The invention is fully described in the following specification, reference being made to the drawings by which it is accompanied, in which:

Fig. 1 is a face view of the device with the cover plate removed as applied to the stile of a window sash to engage the facing strip of the slideway in which the sash moves, and hold it closed, that is, against upward movement, the dot and dash lines indicating the position of the device in the'sustaining position.

Fig. 2 is a cross section of the window sash in its slideway showing the device in plan, and

Fig. 3 is a cross section of the device on the line 3-3 in Fig. 1.

In these drawings 2 represents the stile of the window sash, and 3 its lower rail,

SECURirIG rrrnairsl while l is .the slideway in the sash frame,

thepartition' strip of the slideway and 6 the inner'facin'g of the sash frame.

-O n the inner face of the sash stile 3 is,

pivotally' mounted on a pin 7 a hollow eccen- 'tric-8liaving a cover plate 9 which fits a recess in the open fa'ceof the eccentrlc and is retained against rotation-by a key 10.-

ihe cover plate 9 is secured by a in -11 "which passes through it and is threaded into the closed end orbottom of the eccentric.

iifl'at spring 12 h'as one end anchored at 13 to the pivot pin 7 and is coiled around'it andv the other end bent around the pin 11a) imlight frictional engagement with the facing strip'h of the sash slidewa'y that, when attempt made to lift the sash 2, the'fricti'on' tends to rotate the eccentric 8 on its pin to inove the larger part of the eccentric between the pin 7 and'the sash facing strip 5, and will thereby prevent the sash being from 'the 'sa'shframe accordingly as said member 8 is located for "preventingupward movement of the window or downward movement of the window respectively.

When the-window is elevated and the eccentric placed in the position shown by the dot and dash lines in Fig. 1, the frictional engagement of the eccentric against the member 6, plus the weight of the window, will prevent the spring returning the eccentric to its normal position shown in full lines in Fig. 1. In order then to release the eccentric and permit the spring to act, it is only necessary to lift the window slightly to relieve the wei 'ht on the eccentric;

ed until'the eccentric is manuallyrotated in the opposite direction to withdraw it from i ngagenient with Thus it will be noticed that the spring l2 constitutes a means tending to more the 'eccentricmember 8 toward The window sash, when closed, will be out modification or change to existing window sashes. I

In either position thesecurmg device Wlll prevent rattle of the sash in itsframe.

Having now particularly described my invention, I hereby declare that what I-claim e as new and desire to be protected in by Let- .ters Patent, is:

. 1. A. means for securing a window sash in its frame, said means comprising a relatively shallow hollow cylinder, a pin secured to the stile of the sash on which pin the hollow cylinder is eccentrically mounted, a spring one endof which is secured to the pin about which the cylinder is rotatable which spring after.coilinglaround the pin is connected to the inside of the cylinder to lightly hold the .larger'side of the cylinder in light frictional engagement with the sash frame above the :pin on which it rotates that upward moveinent-of the sash will tend to draw the larger part of the cylinder between thepin and the sash} frame and secure the sash.

2.. A means for securing a window sash in its frame,said means comprising a relatively sh'allowcylinder body openat one end and having its other end projected to form a flange, a disk-like cap fitted over the open end of said cylinder body, a screw passing through said cap and threadedinto the cylinder body for holding the cap in place, said form a cap havlng a projecting edge to flange, a friction hand held n'the peripheral portion of said cylinder'body between said flanges, said cylinder and said cap having aligning apertures located eccentrically of the axis of the cylinder body,fa screw passing through said apertures into the window sash for/securing the device thereto in a pivotal manner whereby said cylinder body may be turned through a complete revolution on said last named screw as an axis, a .Coil spring located within the cylinder body, one end of which is attached to one screw and the other end attached to the other screw. 7 V

Y 8, A meansfor securing a window sash against vertical movement in its" frame, said means comprising a pin secured to-the'stile of the sash adjacent the sash frame, a cylindrical member eccentrically mounted on said pin, a spring means within said member which continuouslytendsto turn it in one direction on said pin to effect a normal engagement of the periphery of said me1nher with the sash frame above the pivotal axis, said member being free to turn through a complete circle save as restrained by contact with the window frame whereby said member may be turned to engage the frame either-above or below its pivotal axis to hold the window secured against movement upwardly or downwardly accordingly as the engagement is above or below said pivotal axis, said spring means functioning to effect thereturn of said member to its normal locking position incontact with the window frame when said member is released from contact with the frame ata place below said pivotal axis, substantially as specified.

In testimonywhereof I aflix my signature.

CALVIN THOMPSON. 

